Radiological Image Detection Disturbance-Based Correction Control
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Solution Overview
Problem
Existing X-ray photographing apparatuses face delays in image acquisition due to vibration stabilization requirements, as they wait for vibrations to be within an allowable range before acquiring X-ray and dark image data, leading to inefficient photography processes.
Innovation Solution
A radiological image detection apparatus with a disturbance detection unit that allows for separate determination of dark image data acquisition and correction data updating based on detected disturbances, enabling suitable correction processes and efficient photography by using new or previous correction data depending on disturbance levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the apparatus waits for vibration to be stabilized within an allowable range before acquiring dark image data and X-ray image data, then the correction quality is improved, but the photographing time is extended and productivity decreases
Solution Approach 1:
The patent applies dynamics by making the determination criteria flexible and adaptable. Instead of using a fixed allowable vibration range for both dark image data and X-ray image data, the system dynamically adjusts the determination criteria based on the type of image data being acquired. The disturbance determination unit selectively applies different thresholds or criteria depending on whether dark image data or X-ray image data is being acquired, allowing the system to optimize for speed when acquiring X-ray images while maintaining quality for dark image correction data.
Solution Approach 2:
The patent changes the parameter of disturbance threshold based on the type of image data acquisition. By modifying the allowable disturbance range or determination criteria according to whether dark image data or X-ray image data is being acquired, the system resolves the contradiction between correction quality and photographing efficiency. This parameter adaptation allows faster acquisition of X-ray images while ensuring high-quality correction data is obtained under appropriate conditions.
2Device complexity
If the apparatus uses a fixed allowable vibration range for both dark image data and X-ray image data acquisition, then the correction process is simplified, but the photographing process is delayed due to unnecessary waiting
Solution Approach 1:
The patent segments the disturbance determination process into separate pathways for dark image data acquisition and X-ray image data acquisition. The disturbance determination unit is divided into distinct functional components that evaluate disturbances independently for each type of image data. This segmentation allows each pathway to have optimized determination criteria, preventing unnecessary delays in X-ray photographing while maintaining appropriate quality control for dark image correction data.
Solution Approach 2:
The system dynamically adjusts the disturbance determination criteria based on the acquisition mode. When acquiring dark image data, one set of criteria is applied, while when acquiring X-ray image data, a different set of criteria is used. This dynamic adaptation eliminates the need to wait for vibration stabilization during routine X-ray photographing, reducing time loss without compromising correction quality when needed.
3Measurement precision
If the apparatus acquires dark image data frequently to update correction data, then the correction accuracy is improved, but the system is more susceptible to disturbance effects
Solution Approach 1:
The patent implements feedback by having the disturbance determination unit continuously monitor vibration levels and provide feedback to the control unit. Before acquiring dark image data for correction data updates, the system checks the current disturbance level. If the disturbance exceeds the allowable range, the acquisition is postponed or cancelled. This feedback mechanism ensures that correction data is only updated when conditions are appropriate, maintaining high correction accuracy while minimizing the risk of incorporating disturbance-induced errors.
Solution Approach 2:
The system performs preliminary disturbance checking before acquiring dark image data. The disturbance determination unit evaluates the current vibration state in advance, and only if the disturbance is within the allowable range does the system proceed with dark image data acquisition. This preliminary action prevents the acquisition of corrupted correction data, ensuring measurement precision while avoiding the harmful effects of disturbance susceptibility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for efficient progression of photography by ensuring suitable correction processes are performed even when disturbances are present, reducing delays and maintaining image quality by using appropriate correction data.
Implementation Method 1
an imaging unit including a plurality of pixels arranged in a two-dimensional array which detect a radiation and convert the radiation to an electrical signal
Data Source
AI summary
A radiological image detection apparatus includes an imaging unit, a storage unit, a correction data generating unit, a correction unit, a disturbance detection unit, and a determination unit. The imaging unit acquires radiological image data. The storage unit stores correction data for correcting the radiological image data. The correction data generating unit generates new correction data based on dark image data and updates the correction data stored in the storage unit. The correction unit performs a correction process for the radiological image data using the correction data. The disturbance detection unit detects a disturbance acting when the imaging unit acquires the dark image data. The determination unit determines whether the updating of the correction data stored in the storage unit is permitted, or whether the acquisition of the dark image data is permitted, based on the detection result of the disturbance detection unit.